Crossword Genius

What supports new bloomers? (7)

Ross

I believe the answer is:

trellis

I'm a little stuck... Click here to teach me more about this clue!

'bloomers?' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for trellis that I've seen before include "Garden climbing frame" , "Latticed frame" , "Garden frame or screen" , "climbers train on it" , "Garden support for climbers" .)

I've seen this clue in The Telegraph.
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